On measuring the electron heat diffusion coefficient in atokamak from sawtooth oscillation observations
On measuring the electron heat diffusion coefficient in atokamak from sawtooth oscillation observations
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DOI：
10.1088/0029-5515/19/6/002
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发表时间：
1979-06
期刊：
影响因子：
3.3
通讯作者：
M. Soler;J. Callen
中科院分区：
文献类型：
--
作者：
M. Soler;J. Callen
本文讨论了通过对内部扰动引起的温度扰动时空演化的实验观测，确定托卡马克中电子热传导系数χe的几种新方法。在橡树岭托卡马克（ORMAK）中，发现χe的各种平均值和χe的径向依赖关系与传统分析电子功率平衡方程所确定的χe(r)一致且更精确。这些测量的最终结果是最终证明托卡马克中主要的径向电子热传递机制是一个微观的扩散过程。
A number of new methods are discussed for determining the electron heat conduction coefficient χe in a tokamak from the experimental observation of the space-time evolution of the temperature perturbations induced by internal disruptions. In the Oak Ridge Tokamak (ORMAK) the various average values of χe and the radial dependence of χe are found to be consistent with and more precise than the χe(r) determined by conventionally analysing the electron power balance equation. The net result of these measurements is to conclusively prove that the dominant radial electron heat transport mechanism in tokamaks is a microscopic, diffusive process.